Device for grinding automobile-valves



F. B. KRALING. DEVICE FOR GFHNDING AUTOMOBILE VALVES.

APPLICATION man MAR. s. |921.

1,396,763. Patented Nov.l15, 1921.

F. B. KRALING.

`DVICE FOR GRINDING AUTOMOBILE VALVES. APPUCATION FILED MAR. 8, 19m.

1,396,763. Patented Nov. 15, 1921.

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` y To all whom it may concern.'

UNITEDI s'rii'lasN PATENT OFFICE.

rREDB. xnALrNe, orLisiaoN, NORTH Diiizo'in.`

Be it known that I, FRED B. KRALING, a citizen of the United States, residing at Lisbon, in the county of Ransom and State of North Dakota, have invented a newand useful Device for Grinding Automobilevalves, of which the followingis a specication.

The device forming` the subject matter of this application isl aapted to be employed for grinding the valves of internal combustion engines on automobiles.

The invention aims topi-Ovide novel means whereby the device may be adjusted properly on the engine, :and to provide novelineans whereby the tool holders may be rotated.

Figure 1 `shows in: vertical elevation, a de* vice constructed `in accordance with i, the. invention, `many, parts appearing in section, and sundry parts being broken `away Fig. 2

,is asection on the line 2-j2 of Fig. 1; 3 isa; action,` on theline `3-.5-3 of Figui; Figli:I

is a` iagrarnmatie` plan showingthe beveled gears` of the automatic reversing-` device; and Fig. 5 is a plan showing a modification.

e In carrying out the invention, there ispro-v `vided a support `denoted generally by the numeral S, t e `sup ort embodying a base 1 carrying a post 2. et collars 3 are mounted v on `the post 2 ad'acentto the `upper end thereof. Interme iate `its ends, the post 2 is ,provided with set collars fi.` y j e A frame `F 's mounted for y horizental swinging movementjon the support ,3. i The frame F comprisesa foot block Guinounted :tor` swinging movement onQ-the post 2 be tween the collars `lettrici a head block 7 mounted for swinging movement on the post, between the collars 3. A base `rod 8 is mounted at onewend in the foot block 6. One end of a downwardly inclined tio rod 9 is connected to the head `block 7. The outer ends of the base rod 8` and the tie rod 9are secured toa'connectionil. The general `outline of `the `frame Fis triangular.

A tubular shaft 11 isjournaled ontbe base i rod 8 and is driven by a pulley12 or in any other suitable way. The pulleya12, is contion being `such tbxtthe machine may be` stopped at the wil `ot 4an operatore@ The shaft 11 is journaledina bracket 1.71.5V The lower end'ofha brace 15 connected ,tothe bracket 14, the upperend of the brace being attached to the tie 9, l. The bracketlfl forms a part of ahanger H mounted to Specification of Letters Patent.

Patented Nov. 15,1921.

,.Applicationled March `8, 1921. Serial No. 450,587.'

swing in a vertical plane on the frame F. The hanger H embodies a tubular member 16 mounted on the base rod 8 for rocking movement. The tubular member 16 is journaled in a bearing 17, a brace 18 extending between the bearing and the tierod. A set screw 19 is threaded into the bearing 17 and may be advanced to bear upon the tubular member 16.

Continuing a specific description of the hanger H, it may be stated that Ts 2O receive the ends of the tubular member 16. Depending sleeves 21 are carried by the Ts 20. 'Screws 22 are threaded into the sleeves 21. Pressure gages23 are interposed in the screws 22. The lower ends of the screws 22 are journaled in yokes 24. Shafts 25 are mounted to rotate in the yokes 24, and are providedlwith cranks 26.` Beveled pinions 27 form `an operative `connection between each shaft 25 and the corresponding screw 22,

4Theletter C denotes, generally, a carrier einbedying ends 28 sides 29 and a bridge 30 connecting the ends 28 of the carrier. The ends 28 of the carrier G are supplied with any suitable means 31,. whereby the carrier may be anchored on the engine of a motor propelled vehicle, without removing the `engine from the vehicle. A shaft 32 extends longitudinally of the carrier C and is journaled lfor rotation in the ends 28 of the carrier. Beveled pinions 33 are secured to the shaft 32, adjacent to one end of the shaft.:l .The teeth 34e of each beveled pinion 33 `extends through a `fraction less than one hundred and eighty degrees, as Fig. 4 of the drawings willshow. The teeth of the beveledpinions 33 mesh into abeveled pinion 35, the beveled pinions 33 being so set on the shaft 32 that but one beveled pinion 33 will coperate at a time with the beveled gear 35. The beveled gear 35 is mounted on one member 36 of a longitudinally eX- tensible shaft, the `shaft member 36 being journaled in the carrier C. The shaft mem- `ber `36 is telescoped into a shaft member 37 `nected opera-tively with the shaft 11, through the ninstrumentality of the beveled pinions 38. ,Anyl desired number of` slides 39 are mounted for reciprocation on the carrier C longitudinally of the carrier, for purposes of adjustment. rfhere will be as many slides 39, and attendant parts, as there are valves Vto grind.` 'The description relative to the slide 39 will, however, proceed in the singular number. The slide 39 is adapted to move for adjustment, longitudinally of the carrier C on the sides 29 of the carrier. A set screw `42 is threaded into the slide 39 and is adapted to engage one of the parts 29 of the carrier, torthe purpose of holding the slide in an adjusted-position. A bearing 40 is secured as shown at 41 to the lower portion ofv the slide 39, the bearing being received between the members 29 of the carrier C. 'Atool holder'43 is journaled for rotationin the bearing 40. On the upper end-of the tool holder-43 there is a beveled Y `pinion 44. The beveled pinion 44 meshes into a. beveled' pinion 45, splined as indicated at 46 onV the shaft 32 for adjustment longitudinally ofthe shaft. The upper portion oli-.the slide 39 carries a depending fork 47,.the hub roi the beveled pinion 45 being grooved as indicated at 48 to fit in the fork.

j The fork 47 constitutes means for holding the beveled pinion 45 in mesh with the beveled pinion 44. a' y i VIn practical operation, the carrier CV is `in the holders may engage properly with theivalvesof/ the enginefA It is clear that by loosening the set screw 42, each slide 39 may be moved lengthwise of the carrier C until. the `tool holder-43 is placed properly with respect. to the valves to be ground. Rotation may be' imparted to the Vshafts 25, by way of the cranks 2G. The beveled pinions 27'rotate the screws 22, and because the screws 22 are threaded into the sleeves 21,?the carrier C will beV crowded downwardly,the= proper pressure being exerted on the'. valves, and, in this connection, it is to benoted that the operator `has within his control, the means whereby he can vary the pressure,'at any time. The purpose of the gages 23 is'to show that the same pressure is produced on the carrier C at both ends thereof. lVlhen the'carrier C moves upwardly or downwardly, responsive to a ro- Y tationor" the screws 22, the shaft member 3G slides in the shaft member 37, the driving mechanism remaining intact and operative. vMotion is transmitted to the tubular shaftV 1l by lthe pulley l2 or otherwise. From the shaft ll motionbis transmitted to the shaft 36--37V by the beveled pinions 38. The beveled pinion 35 Aon, the shaft member 36, 'andthe beveled pinions 33 on the shaft 32 impart rotation to the shaft 32. From lthe shaft 32, rotation is transmitted Vto" the tool holders 43, by wayrof the beveled pinions 44 and 45. The teeth 34 of one beveled pinion 33 leave the teeth of the beveled gear 35, before the teeth 34 of the other beveled )inion 33 engage with the teeth of the beveled gear 35, the inertia of the shaft 32 and attendant parts being sulicient to carrv each pinion 33 into engagement with the gear 35. Since the beveled pinions 33 are on opposite sides of the beveled gear 35, it will be obvious that the direction oit rotation of the shaft 32 will be reversed automatically, the holders 43 being turned lirst in one direction and then in an opposite direction.

The carrier C and parts associated therewith may be adjusted in a variety of ways, to permit the tool holders 43 to coact with the engine valves. Thus, the carrier C may be raised and lowered through the instrumentality of the screws 22. The carrier C i may be swung around in tally, since the frame F is tation on the support S.

In some automobiles, the axes of the cylinders are not disposed vertically but are inelined with respect to the vertical. lhen the machine forming the subject matter of this application is used in connection with an automobile, the cylinders of which are a circle, horizonmounted for roinclined, then the hanger H together with the carrier C may be swung on a horizontal axis represented by the base rod 8 of the frame F. vBy advancing the set screw 19, the hanger H may be held in any position to which it may have been swung. The slides 39 may be adjusted along the carrier C so as to space the tool holder 43 properly depending on the location of the valve stems with respect to each other, in the automobile. It is clear that, when a proper tool is inserted into the holders 43, the valves will be rotated and ground upon seats.

In case it is not desired to reverse the direction of rotation of the shaft 32, the

beveled pinions 33 of Fig. 4 may be replaced longitudinally thereof; means for raising i and lowering the carrier; and means for mounting the carrier for swinging movement on an approximately horizontal axis. I

l3. In a valve grinding device, a carrier; a rotatable tool holder shiftable on the carrier proximately verticalaxis; and means for mounting the carrier for swinging movement on an approximately horizontal axis.

` the last specified means.

4. In a valve grinding device, a carrier;

atool holder journaled on the carrier meansV for rotating the tool holder; means for exerting a pressure on the carrier;` and mechanism `for indicating the pressure exerted by 5.*In a valvegrinding device, a frame; a

longitudinally extensible hanger mounted on the frame to swing in an approximately vertical plane; means for varying the length of the hanger; a carrier on the lower end of the hanger; a rotatable tool holder mounted on the carrier; and driving mechanism extended between the frame and the carrier, a portion of y the driving mechanism being eX- tensible to permit an adjustment between the carrier and the frame. In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

FRED B. KRALING.

Witnesses: i

S. D. ADAMS, ALFRED `M. DELLO. 

